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Note 14 - Fair Value Measurements (Tables)
9 Months Ended
May 31, 2016
Notes Tables  
Fair Value Measurements, Recurring and Nonrecurring, Valuation Techniques [Table Text Block]
        Fair Value Measurements
Using Inputs Considered as
    Fair Value as of
May 31, 2016
  Level 1   Level 2   Level 3
Available for sale securities   $ 2,239,792     $ 2,239,792     $     $  
        Fair Value Measurements
Using Inputs Considered as
    Fair Value as of
August 31, 2015
  Level 1   Level 2   Level 3
Available for sale securities   $ 2,027,441     $ 2,027,441     $     $